package com.highcom.interceptor;

import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

//自定义拦截器需要实现HandlerInterceptor
public class MyInterceptor2 implements HandlerInterceptor {
    //处理器 运行前执行
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {

        System.out.println("前置运行  ------------- a3");
        //返回值为 false将拦截原始处理器的运行
        //如果配置多个拦截器，返回值为false将终止当前拦截器后面配置的拦截器运行；
        return true;
    }
    //处理器 运行后执行
    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        System.out.println("后置运行  ------------- b3");
    }

    //所有拦截器的后只执行全部都结束后，执行该操作
    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        System.out.println("运行完成  ------------- c3");
    }
}
